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H2 is not an atom, it is a diatomic molecule. Each hydrogen atom has 1 valence electron. When two hydrogen atoms covalently bond to form an H2 molecule, there are two valence electrons being shared by the two atoms.
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∙ 12y ago
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∙ 13y agoHydrogen has 1 valence electron. The amount of valence electrons for any element can be identified by it's group number in the Periodic Table.
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∙ 13y agoone valence electron in hydrogen
Wiki User
∙ 7y agoHydrogen has only one valence electron.
Wiki User
∙ 11y agoOnly has 1
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Balance the formula example?
Hcl + Mg --> MgCl2 + H2 This equation has an unbalanced amount of atoms on each side. To work out the balanced formula you need to find the number of atoms of each side. There are: 1 Hcl + 1 Mg ---> 1Mg 2Cl + 2H Bear in mind you cannot change a "clump" of elements, as this changes the reaction (MgCl2). So, to get the equal number of atoms, you simply put in a number at the start of each "clump" to multiply it and even out, sort of like expanding a set of brackets in maths. In this equation we want to put a 2 in front of Hcl to multiply the Hydrogen atom and get 2 hydrogen atoms (therefore balancing with the left side). Doing so will then multiply the chlorine atoms by 2, giving 2 chlorine atoms. So now there are: 2Hcl + Mg --> MgCl2 + H2 (2 hydrogen atoms, 2 chlorine atoms, 1 magnesium atom on the left. one magnesium atom two chlorine atoms and 2 hydrogen atoms on the right) and that's it. the equation is balanced, easy as that... If you get it try this one, Na + H2O --> NaOH + H2. Answer will be down here.... ---- 2Na + 2H2O --> 2NaOH + H2
How many grams of H2 are needed to produce 13.14g of NH3?
The balanced equation for the formation of NH3 is N2 + 3 H2 --> 2 NH3. 13.64 grams of ammonia is equal to .801 moles. Then 1.2015 moles of hydrogen are needed, or 2.42 grams.
What is the difference between HB2 H2 pencils?
Your mother
If a microbe uses Co2 for carbon and H2 for energy the microbe is?
chemoautroph
How many grams of Fe3O4 are required to react completey with 300 grams of H2?
its not 8681 g.....got that wrong on the test.
How many valence electrons does H2O2have?
H2O2 is a compound, and the concept of "valence electrons" applies to atoms but not to compounds. If the question is or should be intended to be, "How many valence electrons did the atoms in one formula unit of H2O2 have before they reacted to form the compound?", the answer is one from each hydrogen atoms and six from each oxygen atom, for a total of 14.
What is the number of electrons in hydrogen?
There is one electron in a hydrogen atom. Hydrogen has 1 valence electron and is therefore very unstable by itself. Hydrogen is diatomic, which means that it naturally occurs bonded with another Hydrogen atom: H2
How many total valence electrons does NH4 have?
Technically, the concept of valence electrons applies only to individual atoms, not to molecules or ions such as NH4+. As atoms, each nitrogen atom has five valence electrons and each hydrogen atom has one valence electron, so that the ion could be said to have a total of nine valence electrons.
Why are most covalent bonds unstable?
In covalent bonds, two atoms share electrons. Since atoms are unstable when they do not have enough electrons in their valence shell, and neither have enough in their valence shell (since they are sharing the electrons), covalent bonds are usually unstable. Well this is a strange question. What is meant by unstable? Is it reactivity? Yes many compounds are unstable, but many such as H2O, H2 are very stable. H2 is reactive with oxygen- because the formation of H2O from O2 and H2 releases energy. However without external influences e.g radiation, other reactive species (like O2) , H2 is extremely stable.
What bond forms between two atoms?
A chemical bond that may be ionic where the atoms bonded together are charged or covalent where electrons are shared. The nature of the bond depends on the relative electronegativity of the atoms involved. An example of an ionic bond is in sodium chloride. An example of a covalent bond is one between carbon and hydrogen for example in a hydrocarbon. When an element atom bonds to another atom of the same elemnt then that bond is covalent, eg O2, N2, H2, S8.
How many valance electrons in H2?
1
How H and H2 both can be elements?
H symbolises one hydrogen atom. H2 symbolises two hydrogen atoms bonded together or sharing electrons. They are the same because they contain only one type of atom: the hydrogen atom, one proton and one electron
How many bonds and how many electrons in total does h2 share?
BUTSS
How many electrons are present in one mole of H2?
2
How many electrons are needed to fill valence shell in hydrogen?
The atomic number for hydrogen (H) is 1 in the Periodic Table of Elements and it has that number of electrons (Valence & otherwise). Hence H2O for water since Oxygen O needs 2 electrons added to its valence electrons to make the stable compound WATER.
How does a atom of hydrogen differ from a molecule of hydrogen?
H is the independent state of a hydrogen atom that has 1 valence electron and is not in bonded state.whereas H2 is a molecular form of hydrogen and both atoms of hydrogen share their 1 valence electron with one another. H has to make a bond whereas H2 has made a covalent bond and has become a noble gas i.e. it will not make any bond with any other atom.H2 can be shown as H . . H H2 Note that "." are the atoms of hydrogen.
What is chemical formula of sulphuric acid?
H2SO4. In sulphuric acid, the S atom has a valence of 12 electrons. Two of the O atoms are attached to the S atom through double bonds. The other two O atoms are hydroxy ("-OH") oxygen atoms that are attached the S atom through a single bond.
